The Democrat News (Sapulpa, Okla.), Vol. 58, No. 79, Ed. 1 Tuesday, April 30, 1968, newspaper, April 30, 1968; (https://gateway.okhistory.org/ark:/67531/metadc1531411/m1/1/: accessed July 1, 2024), University of North Texas Libraries, The Gateway to Oklahoma History, gateway.okhistory.org; .